Thomas angell



(No Model.)

T. ANGELL.

GAS REGULATOR.

No. 322,572. I PatentedJuly 21, 1885.

N, PETERS, Phnko-Likhcgmpher. Walhmgiom D. c.

UNITED STATES PATENT OFFICE.

THOMAS ANGELL, OF BROOKLYN, NEW YORK, ASSIGNOR TO EDWVIN B. \VILLOOX AND W'ILLET THOMPSON, OF SAME PLACE.

GAS-REGULATO R.

SPECIFICATION forming part of Letters Patent No. 322,572, dated July 21, 1885.

Application filed May 6, 1885.

To all whom it may concern:

Be it known that I, THOMAS ANGELL, of Brooklyn, in the county of Kings and State of New York, have invented an Improvement in Gas-Regulators, of which the following is a specification. v

Gas-regulators have been made with a hollow inverted cup, the edges of which pass into mercury, and the gas-pressure acting within the inverted cup moves the same and opens or closes the valve according to the pressure of the gas. In these regulators there is difficulty in obtaining access to the valve for cleaning the same, and the mercury is liable to flow into the gas-pipes and into the meter and injure the same if the annular basin becomes tipped or in case the mercury-bowl becomes injured. p

In my improvement I make use of a case with screw-openings for the gas-pipes, a tubular connection with a seat at the lower end that screws into the case, a valve to the seat, a mercury-holding bowl that is attached to the tubular connection, and by which the tubular connection and valve-seat can be unscrewed and removed, and I provide a central hub to the mercury-holding bowl to prevent any mercury passing into the gas-pipes through the small opening around the valve-stem. The mercury-holding bowl is a separate casting from the case, so that if it is broken accidentally the mercury will fall on the outside of the regulator and not run into the meter and injure the same.

In the drawings, Figure 1 is a vertical section of the gas-regulator, and Fig. 2 is a horizontal section at the line 00 x.

The case A is to occupy a horizontal position or nearly so. At or near one end there is the coupling or socket b for the delivery gas-pipe, and at cthere is the coupling or cylinder into which is screwed the gas-supply pipe. The valve-seat d is at the lower end of a cylinder, E, andaround the same a screw-thread is out, so that the cylinder E passes in through a hole in the case A and screws into the case A at the partition between the inlet and outlet gas-pipes, and around the cylinder E is a collar or flange that makes a tight j oint against the top of the case A by the introduction of (No model.)

a flexible washer or by red lead or other similar material. This allows for. unscrewing and removing the cylinder E and parts connected to it or for replacing them. Portions of the cylinder E above the valve-seat and screw are removed or perforated to allow the gas to pass along in the case A between the supply-pipe and the delivery gas-pipe.

The annular mercury-holding bowl H is preferably of thin cast-iron,and it is either formed with or permanently connected to the cylinder E. I have shown the sameassecured by a nut, F, that forms a central hub within the bowl, but this hub may be cast with the bowl, the cylinder E being screwed into the same, and riveted or otherwise secured, so that the cylinder E can be rotated to unscrew the same by grasping the mercury-bowl H.

The nut or hub F is made with aprojecting flange or rim, f, that prevents any mercury reaching the openingin the cylinder E, through which the valve-stem it passes, should the mercury-bowl become tipped to one side, as this rim will deflect the mercury away from the valve-stem and its opening; hence no mercury will run into the gas-pipes or into the meter to injure the same or obstruct the pipes.

The valve t is at the lower end of the stem k and closes upwardly against the seat at the lower end of the cylinder E, and the valvestem passes through guides or bridges, and these, however, are not sufficiently tight to prevent the gas passing into the inverted cup m that is fastened to the upper end of the valve -stem is. The edges of this cup pass down into the mercury in the annular bowl H and prevent the escape of gas; but such gas acts by its pressure to raise the cup and close the valve whenever the pressure of the gas upon the delivery side of the valve becomes greater than the regular or maximum standard pressure.

The cover N rests upon the edges of the annular mercury-cup. It may be fastened in its place or be removable, as desired.

In some instances the mercury in the annular cup becomes oxidized by the action of the air and gas. To avoid this I place upon the surface of the mercury a layer of heavy oil or glycerine that does not easily evaporate or become changed by the action of the atmosphere or of the combustible gas, so that the mercury is thereby protected from oxidation. The interior of the regulator is preferably porcelain'lined, especially where the mercury is in contact with the same.

The mercury-holdingvbowl being separate from the case there is no risk of the mercury running into the gas-pipes or meter, even if mercury and a central hub rising above the bottom of the bowl, in combination with the case that connects the gas-pipes and a tubular connection between the hub and the case, substantially as set forth.

3. The inverted cup, the valve, and the stem to which the cup is attached, in combination with a mercury-holding bowl, and a tubular vertical connection passing through the case and screwed into the partition and having a valve-seat at the lower end, so that the valve and seat can be removed bodily by unscrewing the bowl and its tubular connection, substantially as specified.

Signed by me this 1st day of May, A. D. 1885.

I THOS. ANGELL.

Witnesses:

GEO. T. PINOKNEY,

WILLIAM G. MOTT. 

